Drop the JAI libraries

Details

Description

The PDF parser plugin contains Java Advanced Imaging (JAI) libraries (jai_core.jar and jai_codec.jar) that are licensed under the Sun Binary Code License. The license is incompatible with Apache policies, so we need to drop those libraries.

AFAIK (see PDFBOX-381) PDFBox only uses the JAI libraries for handling page rotations and tiff images, so simply dropping the JAI jars shouldn't have too much impact. A better solution would be to switch to using Apache PDFBox that has a proper workaround for this issue, but the first Apache PDFBox release has not yet been made.